1) (-5)(-3) is 15
2) 24/-4 is -6
3) 36(0.5) is 18
The percentages for each acid are:
- 0% acid ⇒ percentage disolved = 0%
- 33% acid ⇒ percentage disolved = 1%
- 66% acid ⇒ percentage disolved = 2%
- 100% acid ⇒ percentage disolved = 4.2%
<h3>
How to get the percentages?</h3>
Here we just need to use the given formula:

For the 0% acid, the initial and final mass are the same:
initial mass = final mass = 10.3g
Then the percent dissolved is:

For the 33% acid we have:
- initial mass = 10.1g
- final mass = 10g
Then:

For the 66% acid:
- initial mass = 10g
- final mass = 9.8g

for the 100% acid:
- initial mass = 9.9g
- final mass = 9.5g

If you want to learn more about percentages:
brainly.com/question/843074
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Answer:
x+6 ≥ 25
Step-by-step explanation:
The product means the sum of <em>x</em> + 6. In this question, <em>x</em> + 6, is greater than or equal to the number 25 which is what ≥ means. Meaning, <em>x</em> can be replaced by a number that when added to <em>6</em>, <u>will equal to </u><u><em>25</em></u><u> or more</u>. For example, <em>x </em>can equal <em>19, 20, 21 </em>and so on.
The answer to the question is:
12 7/15
Since it is 11 22/15. When you have 15/15 it makes a whole. Then whatever you have left you make a fraction again.